折扣计算器 — 公式

How Discounts Are Calculated

Savings = Original Price × Discount% / 100

Sale Price = Original Price - Savings

Use this calculator anytime you see a percentage-off sale and want to know the exact dollar amount you will save and the final price you will pay at checkout. Keep in mind that discounts are applied before sales tax in most jurisdictions, so the tax is calculated on the reduced price, not the original.